1. Introduction
Welcome to your Fitbit Versa 4 Fitness Smartwatch. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device. The Versa 4 is designed to help you track your health and fitness, stay connected, and manage your day with advanced features like GPS, heart rate monitoring, and smart notifications.
2. What's in the Box
- Fitbit Versa 4 Fitness Smartwatch (Black/Graphite)
- USB Charging Adapter
- Microfiber Cleaning Cloth
- Small and Large Band Sizes

Image: Contents of the Fitbit Versa 4 package, including the smartwatch, USB charging adapter, and microfiber cleaning cloth.
3. Setup
3.1 Charging Your Device
Before first use, fully charge your Fitbit Versa 4. Connect the USB charging adapter to a power source and attach the magnetic end to the charging port on the back of your smartwatch. A full charge typically takes about 1-2 hours and provides over 6 days of battery life.
3.2 Pairing with Your Smartphone
- Download the Fitbit app from the App Store (iOS) or Google Play Store (Android).
- Open the Fitbit app and create an account or log in.
- Follow the on-screen instructions in the app to pair your Versa 4. Ensure Bluetooth is enabled on your phone.
- The Versa 4 is compatible with both iOS and Android devices.

Image: The Fitbit Versa 4 screen showing battery life and icons indicating compatibility with iOS and Android operating systems.
4. Operating Your Versa 4
4.1 Navigating the Touchscreen
The Versa 4 features a vibrant color touchscreen. Swipe left or right to access different apps and widgets. Swipe up from the watch face to view notifications, and swipe down to access quick settings.
4.2 Using the Side Button
The physical button on the side of the watch can be customized for quick access to your favorite features or apps. A single press typically returns you to the watch face or opens a pre-set app.
Image: The Fitbit Versa 4 smartwatch showing the Daily Readiness Score interface, indicating readiness for activity.
5. Health & Fitness Tracking
The Versa 4 offers comprehensive health and fitness tracking capabilities:
- 24/7 Heart Rate Monitoring: Track your heart rate continuously with the multi-path optical sensor. Receive notifications for high or low readings.
- Blood Oxygen Saturation (SpO2): Monitor your SpO2 levels using the red and infrared sensors.
- Skin Temperature: Track variations in your skin temperature through the Fitbit app to understand changes in your body's baseline.
- Daily Readiness Score: Get a personalized score each morning to guide your recovery and optimize your workouts.
- 40+ Exercise Modes: Track a wide range of activities, including running, biking, and yoga, with automatic exercise recognition.
- Built-in GPS: Accurately track pace and distance during outdoor activities without needing your phone.
- Cardio Fitness Score: Understand your cardiovascular health with a VO2 Max estimate.
- Sleep Tracking & Sleep Score: Monitor your sleep stages (light, deep, REM) and receive a personalized sleep score.
Image: A visual representation of the Fitbit Versa 4's fitness tracking capabilities, highlighting built-in GPS, over 40 exercise modes, and the Daily Readiness Score feature.
Image: The Fitbit Versa 4's health tracking features, including 24/7 heart rate monitoring, resting heart rate variability, blood oxygen saturation (SpO2), and skin temperature tracking.
Image: An overview of the Fitbit Versa 4's sleep tracking features, including monthly sleep analysis, sleep tracking and score, Smart Wake alarm, and Sleep Profile.
6. Smart Features
The Versa 4 keeps you connected and simplifies your daily tasks:
- On-Wrist Bluetooth Calls: Answer calls directly from your wrist when connected to your phone.
- Notifications: Receive text messages, call alerts, and app notifications.
- Voice Assistant: Built-in Alexa allows for voice commands and information access.
- Navigation: Use Google Maps for turn-by-turn directions on your wrist.
- Payments: Make secure, contactless payments with Google Wallet.
7. Maintenance
7.1 Cleaning Your Device
Regularly clean your Versa 4 and its band to prevent skin irritation and maintain device functionality. Use the provided microfiber cleaning cloth to gently wipe the screen and sensors. For the band, use a mild, soap-free cleanser and rinse thoroughly. Ensure the device is dry before wearing.
7.2 Water Resistance
The Versa 4 is water resistant up to 50 meters. It is suitable for swimming and showering. After exposure to water, especially saltwater or chlorinated water, rinse the device with fresh water and dry it thoroughly to prevent damage.
7.3 Battery Care
To prolong battery life, avoid exposing your device to extreme temperatures. Charge your device regularly, but avoid leaving it fully charged or fully depleted for extended periods.
8. Troubleshooting
8.1 Device Not Turning On/Charging
- Ensure the charging cable is securely connected to both the device and the power source.
- Try a different USB port or power adapter.
- Clean the charging contacts on the device and cable.
8.2 Syncing Issues
- Ensure Bluetooth is enabled on your smartphone and the Fitbit app is open.
- Restart your Versa 4 and your smartphone.
- Check for app updates in your phone's app store.
8.3 Inaccurate Readings
- Ensure the device is worn snugly but comfortably on your wrist, typically one finger's width above your wrist bone.
- Clean the optical sensors on the back of the device.
- For GPS, ensure you have a clear view of the sky.
For more detailed troubleshooting, refer to the Fitbit support website.
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | FB523BKBK-US |
| Product Dimensions | 1.5 x 1.5 x 0.45 inches |
| Item Weight | 7.7 ounces (0.48 Pounds) |
| Screen Size | 1.34 Inches (Visible screen diagonal: 2" / 4 cm) |
| Battery Life | 6+ days (typical usage) |
| Battery Type | Lithium Ion (1 D battery included) |
| Connectivity | Bluetooth |
| GPS | Built-in GPS |
| Water Resistance | Up to 50 meters |
| Operating System Compatibility | iOS, Android |
10. Warranty and Support
For information regarding your product's warranty, please refer to the official Fitbit website or the warranty card included with your purchase. For further assistance, technical support, or to view frequently asked questions, visit the Fitbit support page at help.fitbit.com.





